Soil-pipe drainage system



Aug. 23,1927. 1,640,058

A. E. STRINGER SOIL PIPE DRAINAGE SYSTEM 2 Sheets-Sheet 2 Filed Jan. 14:1927 Patented Aug: 23, 1927.

" PATENT OFFICE.

ALFRED I. BTBiniGEB, OF CHICAGO, ILLINOIS.

SOIL-PIPE DRLINA GI exs'rmt.

Application fled January 14, 1 987, Serial Io. 161,058.

This invention relates to piping systems, with special reference/t soiland vent pipe joints, permitting expansion when solidly embedded inconcrete or the like.-

Heretofore large fire proof buildings have been constructed with steelframes and hollow tile floors, in which case the shell of the buildingcan be completed to the roof fore the plumbers come in to make their m-10 stallation, the mechanic having each floor to support and distributethe weight of the pipmg. Within the last few years,- concreteconstruction has come to the front and in such a case the plumbers mustinstall 15 the piping before pouring each floor and the mechanic isobliged to run his p1pe up in the air above the highest floor that is tobe poured, keeping one set of piping suspended in the airy above eachfloor of concrete. 20 This pi ing all has to be set in place and sosuspen ed that the concrete pourers can then come along and pour theirconcrete enclosing or embedding the fittings into the concrete, so thatprovision must be made for the expansion in the pipes causedby waste hotwater from bathtubs and the like. Because the heavy upstanding pipingmust be supported by the embedded fitting it is an object of thisinvention to rovide a soluble gasket of sufiicient har ess and strengthto initially support the pi mg from the end, this gasket bein disso vedout during the testing-of the piping after the concrete burdens andsupports the p1pfor the expansion of the pi e which would otherwise beapt to crack t e fittings. As an alternative, a yielding supportinggasket can be used which will permit expansion while being stifi' eneughto support the ori inal dead weight of the pipe.

ther and further important objects of this invention will be apparentfrom the disciosures in the specification and the accom' panyingdrawings.

V This invention (in preferred form) is illustrated in the drawings andhereinafter more fully described.

@n the drawings:

Figure 1 is a section through a multi le branch elbow fitting, showingthe expansion joints of this invention first set Figure a sectionsimilar to lgure l,

ing, the removal of the gasket leaving spaceshowingthe s ace allowedfor. lengthwise movement of t e risers due to the removal of the solublegasket. a

Figures 3, 4 and 5 disclose three illustrative pi ing layouts to showthe various locations or expansion joints.

As shown on the drawings:

A multiple branch fittin is shown in Figures 1' and 2 and inten ed to heimbedded in the concrete to re lace a roup of elbows and PS connected ynipp es. The bottom outlet 11 is threaded for iron or steel pipe, whilethe two vertical outlets 12 and 13 areal-ranged for expansion joints inconnection with the strai ht ends of pipes 14 and 15. The side outlet 16is arranged for the customary oakum and caulked lead joint used withcast iron pipe. The expansion joints on the outlets 12 and 13 comprise aflat inner seat shoulder 17 intended to -receive a soluble or flexiblegasket 18 to initially support the weight of the upstanding piping, asuitable so eing wood pul sawdust or sand moulded with a soluble binder,such as Inc. The entire material may be made 0 a soluble material, if sodesired. If a yielding or flexible gasket is desired, a cork or rubbercompound may be used. The pi e ends 14 and rest on this gasket and t ejoint is sealed in the bell mouth shown on the out lets, oakum 19and-'caulked lead 20 providing a. suitable seal that will allowlongitudinal movement of the pipe.

In F igure3 a very comp ete installation is shown using the combinedfitting 10 embedded in the. fioor with a threaded pipe 21 used as themain soil pipe below the top floor and having expansion joints with thefittings on the lower floors. The usual cast iron vent pipe 22 is usedwith a threaded revent pipe 23 having expansion joints on the lower endsthereof, a number of waste pipes 24 leading into a lateral 25 andhaving: expansion joints at top and bottom.

Figure 4; shows a system resembling Fig ure'3, but having a cast ironsoil pipe stack 26 with the threaded steel. revent pipe 23 as before. Inthis case, expansion joints may be used. or for the soil pipe shortlengths thereof may provide sufficient flexibility, depending on theanticipated amount of expansion due to the number of hot water ublegasket material waste connections. in this case the soil pipe is notintended to be inclosed in the concrete but the revent pipe will be, sothat ex ansion joints are essential on: the revent, ecause this pipe isfrequently also used for a waste pipe and is subject to expansion causedby hot water.

, In Figure 5 cast iron soil pipeis used, both for the main stack 26 asin Figure 4 and on the revent as indicated by the numeral 27. Therequired. expansion joints are used on the waste pipesand revent asbefore, these joints being required wherever expansion-is liable to damae fittings embedded in the concrete. Anot er important point is thatthese fittings take care of not only the expansion from the change intemperature in the system due to hot water and seasonal variations, butserve as well to avoid breakage due to settling, which occurs in nearlyevery new building after it has been erected and frequently causesbreaks in pipe and fittings rigidly installed and connected in thebuilding. V,

I am aware that many changes may be made, and numerous details ofconstruction may be varied through a wide ran without departing from theprinciples 0 this invention, and I therefore do not pur ose limiting thepatent anted hereon, ct erwise than necessitate by the prior art,

I claim as my invention:

1. .An expansion joint for pipes comprising a bellmouthedsocket,meansinsertable in the bottom of said'socket for temporarily supportinga length of pipe, andpermanent sealing means in said socket around saidpipe adapted to permit longitudinal movement of said pipe relative tosaid socket.

2. A multiple branch pipe fitting adapted to be embeded in concrete,expansion joints on said branches, and means Within said expansionjoints adapted to temporarily neeaoes support the weight of the pipeduring the erection of a stack of piping.

3., A multiple branch pipe fitting adapted to be embedded in concrete,expansion joints on said branches, and soluble gaskets below the pipeends in said expansion joints ada ted to temporarily support the weightof t e pipe during the erection of a stack of piping.

4. An expansion joint for a pipe stack comprising a bell-mouthed sockethaving an interior shelf aligned with the end of the pipe to be insertedtherein, a soluble gasket positionedbetween the pipe end and the shelffor temporarily supporting the upstanding pipe stack during the pouringof concrete thereabout, and packin around said pipe and spaced from saisoluble gasket.

5. A pipe stack adapted to be embeded in concrete comprising branchfittings, expansion joints between adjacent fittings, and means adaptedto temporarily support the superimposed portion of the stack whilepouring concrete thereabout,

8. A pipe stack adapted to be embedded in concrete comprising branchfittings, expansion joints between adjacent fittings, and means withinsaid expansion joints adapted .to temporarily support the superimposedportion of the stack while pouring concrete thereabout.

An expansion joint for a pipe stack com prising a socket adapted toreceive a pipe end, said socket. having an interior support for said"pipe end, and a soluble gasket positioned between said pipe end andsaid support for temporarily sustaining the weight of the superimposedipe In testimony whereof I have hereunto subscribed my name at Chicago,Cook (Bounty, Illinois.

ALFRED E. STRINGER.

